EP4058732A1 - Four à dispositif de détection de mode de cuisson et son procédé de fonctionnement - Google Patents

Four à dispositif de détection de mode de cuisson et son procédé de fonctionnement

Info

Publication number
EP4058732A1
EP4058732A1 EP19944787.1A EP19944787A EP4058732A1 EP 4058732 A1 EP4058732 A1 EP 4058732A1 EP 19944787 A EP19944787 A EP 19944787A EP 4058732 A1 EP4058732 A1 EP 4058732A1
Authority
EP
European Patent Office
Prior art keywords
commutator
control unit
electronic control
oven
electric heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19944787.1A
Other languages
German (de)
English (en)
Other versions
EP4058732A4 (fr
Inventor
Fatih ZUNGOR
Faruk TAS
Metin OZTURK
Mustafa BOZTAS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mamur Teknoloji Sistemleri Sanayi AS
Original Assignee
Mamur Teknoloji Sistemleri Sanayi AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mamur Teknoloji Sistemleri Sanayi AS filed Critical Mamur Teknoloji Sistemleri Sanayi AS
Publication of EP4058732A1 publication Critical patent/EP4058732A1/fr
Publication of EP4058732A4 publication Critical patent/EP4058732A4/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0263—Ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat

Definitions

  • the present invention relates to an oven with an electronic controller configured to detect the cooking mode, and the operation method thereof.
  • Cooking chamber temperature of an oven that contains electrical elements such a fan, lighting elements and electric heating elements in a cooking chamber is set through an adjustment switch on a control panel.
  • a thermostat measures the cooking chamber temperature based on the selected temperature, activating and deactivating electric heating elements as necessary.
  • a cooking mode setting knob on the control panel allows selecting different cooking functions. Different electrical components in the oven are activated in a combination determined by the selected cooking mode. As an economic solution, the cooking setting mode selection is made through mechanical switches connected to a rotating adjustment switch called a commutator. Contact elements attached to the adjustment shaft on the commutator open and close multiple switches based on the shaft's angle of rotation. Mains power is supplied to necessary electrical components in the oven based on the combination of open-closed switches corresponding to the selected cooking mode.
  • the object of the present invention is to detect the operation mode in ovens with mechanical commutators in a simple manner.
  • the invention relates to an oven containing a rotatable mode setting knob disposed on a control panel; multiple electrical electric heating elements provided inside a cooking chamber; a commutator operated by activating and deactivating the electrical electric heating elements to heat the cooking chamber in a predefined combination -for example, only the top electric heating element for grill mode or top and bottom electric heating elements together in a cooking mode- by mechanical switching when the mode setting knob is rotated in corresponding selected operation mode and a temperature adjustment element in connection with the electrical electric heating elements to set inner temperature of the cooking chamber.
  • an electronic control unit is configured to check each output terminal of the commutator to detect a return signal on a corresponding output terminal while supplying the commutator a constant electric signal in a predefined modulation from at least one input terminal in a sampling interval.
  • the electronic control unit e.g. when a start button is pressed, simply sends an electrical current supplied by a power supply to the input terminal of the commutator in a predefined modulation (for example sinusoidal or flat).
  • the input terminal is the input end of each mechanical switch allocated to each program on the commutator. The input signal provided by electric current fluctuate through the mechanical switch activated by the commutator, reaches to the output terminal of the relevant switch and generate the return signal.
  • the input signal cannot reach the output terminal of inactive mechanical switches. Therefore, the electrical signal returns to the electronic control unit as a return signal from whichever output terminal of the commutator's mechanical switches is supplied with an electrical signal.
  • the electrical control unit checks the presence of return signals, determines the corresponding output terminal for the return signal’s output wire, compares the activated electric heating elements to the predefined records in its memory unit and determines the operation mode. Thus, it can activate a predefined heating profile for the relevant operation mode in order to, for example, increase the operation efficiency.
  • the heating profile is a program relating to the activation duration of the electric heating elements that allows keeping the cooking chamber temperature near the selected values.
  • the electronic control unit is provided on the control panel distant from the commutator and comprises an lead wire and output wire from one end connected to the electronic control unit and on the other end to the commutator from the corresponding input terminal and output terminal in electric signal conducting manner to transmit electrical input signal and the return signal respectively.
  • the lead wire is connected to each corresponding input terminal on the commutator and the output wire to the corresponding output terminal in series or in parallel manner.
  • Serial or parallel connections allow the input or output terminals to each port of the commutator, i.e. connection ports of the mechanical switch. While connections for each input or output can be established to the electronic control unit terminal through separate lead and output wires, also a single lead and output wire can be adapted.
  • the electronic control unit is connected to a display configured to show the selected operation mode. The display informs the user regarding the selected mode when the electronic control unit detects the selected operation mode by, for example, displaying a corresponding standard cooking mode icon or a text.
  • the display may be a backlit digital display screen.
  • an oven operation mode comprising the following steps: of electronic control unit to generate an input electric signal, detect the presence of the return signal and compare the active mechanical switching pattern with a predefined configuration stored in a memory unit thereof and store detected corresponding operation method information to the memory module.
  • This method allows easy detection of mechanical switches on the commutator which are passing the electrical signal, that is, conducting electricity to the connected electric heating element by analyzing the signal in the electronic control unit.
  • mechanical switches are connected and driving other features with electricity of the oven such as fans and lighting elements, and the electronic control unit detects the operating features.
  • the return electronic signal is sinusoidal form, and comprising the step of the electronic control unit to measure the slope of the electronic return signal and determine whether a mechanical switching is carried out based on detection of a wave slope.
  • Figure 1 is the schematic frontal view of an oven comprising the cooking mode detection device of the subject matter along with a drawing symbolizing the functional structure of the commutator.
  • Figure 2 presents graphs showing return signals processed/not-processed by an electronic control unit in the cooking mode detection device of the subject matter invention.
  • FIG. 1 shows the frontal view of an oven (10) with the cooking mode detection device of the present invention and the operation diagram of a mechanical commutator (60) used to set the operation mode (A, B, C) of this oven.
  • the oven (10) contains a confined cooking chamber (11) accessed from the front through a hinged door, and a control panel (12) horizontally disposed on the top.
  • the control panel (12) has a display (14) disposed to in a visually accessible manner from the outside and setting buttons (15) are disposed adjacent to the side of the display (14).
  • An electronic control unit (30) on the back side of the setting buttons (15) and display (14) is attached to the control panel (12) from its back side.
  • the setting buttons (15) and display (14) directly access the electronic control unit (30) in a electric signal conducting manner.
  • the electronic control unit (30) contains a processor (not shown) and a memory module (not shown) that communicate with each other by conducting low voltage electric signals on a printed circuit.
  • An embedded software drives the electronic control circuit (30) and carries out functions such as clock, alarm, etc. depending on the model, and allows the user access to relevant usage information and adjustment parameters through the display (14).
  • the display (14) is a backlit LCD unit.
  • the control panel (12) has a rotary temperature setting knob (20).
  • the temperature setting knob (20) allows the cooking chamber (11 ) to reach a temperature set by the user, by activating and deactivating the electric heating elements (18, 19) inside the cooking chamber (11 ) through a connected thermostat (not shown).
  • the control panel (12) also has a rotary mode setting knob (50).
  • the mode setting knob (50) is connected to a mechanical commutator (60) in a manner that change its setting by rotation by means of a shaft.
  • the mechanical commutator (60) is of standard build and contains a cam switch that generates different connection combinations based on the rotation angle between multiple switches moved by a rotating shaft as specified in patent no. EP2938928, hereby incorporated by reference, particularly shown in Figures and described as the control element, and the corresponding metal contacts.
  • the electrical connection diagram of the commutator (60) is shown in Figure 1 . Under normal circumstances, OFF mode (A) is selected on the mode setting knob (50).
  • connection terminal indicated as P3 and the opposite terminal no. 1 when the contact between connection terminal indicated as P3 and the opposite terminal no. 1 is rotated to establish a bridge in the first cooking mode (B), an electrical signal is conducted from the input terminal (62) to the corresponding output terminal (64) through two terminal contact.
  • Mains current (L) passes through contact no. 1 and reaches an electric heating element (18) inside the cooking chamber (11).
  • the selected electric heating element is on top (18)
  • the selected cooking mode is grilling.
  • the mode setting knob (50) is rotated to a second cooking mode (C) position marked by screen printing on the control panel (12), activating the second electric heating element (19).
  • the selected second cooking mode (C) is the cooking mode in which both top and bottom electric heating elements (18, 19) are activated.
  • the electronic control unit (30) that is ON (energized) directs a sinusoidal input signal (si) to the commutator (60) as shown in Figure 2.
  • the input signal (si) reaches the commutator (60) from the input terminal (62) through a connected lead wire (66).
  • the lead wire (66) is connected in a manner that conducts electric signals between the electronic control unit (30) on one end and the corresponding input terminal (62) on the other.
  • an output wire (68) is connected between an output terminal (64) on one end and the electronic control unit (30) on the other in a manner that conducts electric signals in order to provide the return of a return signal (S2) to the electronic control unit (30).
  • the indication mark on the mode setting knob (50) faces upwards.
  • all switching elements of the commutator (60) are in a non-conducting state as shown in Figure 1 . Therefore, although the electronic control unit (30) conducts the input signal (si), which is a sinusoidal electric signal to the P3 input terminal (62) of the commutator (60) through the lead wire (66), the electronic control unit (30) detects a flat return signal (S2) on corresponding output terminal no. 1 (64).
  • the electronic control unit (30) is configured to detect sinusoidal electric signals.
  • the electronic control unit (30) When a flat signal is received from the output wire (68), the electronic control unit (30) generates an OFF mode (A) record and the display (14) informs the user that a selection is not made.
  • the mode setting knob (50) When the mode setting knob (50) is set to the first operation mode (A), one of two input terminals of the P3 terminal (62) conducts mains current (L) to the electric heating element (18), while the other conducts the input signal (s1 ) supplied from the electronic control unit (30) in connection with the lead wire (66) to one of two output terminals of terminal no. 1 (64), to which an output wire (68) is connected.
  • the electronic control unit (30) detects the sinusoidal return signal (s2) by measuring their slopes.
  • the slope detected in the return signal (s2) is converted by the electronic control unit (30) to a digitally interpretable processed return signal (s2a) that indicates the switch (P3, 1) that is activated on the commutator (60).
  • This allows the electronic control unit (30) to match the return signal (s2) to the combination stored in the memory module (for example, P3, 1 top electric heating element, i.e. grill mode) to detect the selected oven mode.
  • the electronic control unit (30) operates the oven according to the cooking profile that is assigned to grill mode (first operation mode (B)) in the memory module.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

L'invention concerne un four comprenant un bouton de définition de mode rotatif (50) disposé sur un panneau de commande (12) ; de multiples éléments chauffants électriques (18, 19) disposés à l'intérieur d'une chambre de cuisson (11) ; un collecteur (60) actionné par l'activation et la désactivation des éléments chauffants électriques (18, 19) pour chauffer la chambre de cuisson (11) selon une combinaison prédéfinie par commutation mécanique lorsque le bouton de définition de mode (50) est tourné dans un mode de fonctionnement sélectionné correspondant (A, B, C) et un élément de réglage de température (20) en connexion avec les éléments chauffants électriques (18, 19) pour définir la température interne de la chambre de cuisson (11). Le four comprend en outre une unité de commande électronique (30) qui est configurée pour vérifier chaque borne de sortie (64) du collecteur (60) pour détecter un signal de retour (s2) sur la borne de sortie correspondante (64) tout en fournissant au collecteur (60) un signal électrique constant (s1) selon une modulation prédéfinie à partir d'au moins une borne d'entrée (62) dans un intervalle d'échantillonnage afin de détecter le mode de fonctionnement sélectionné (A, B, C).
EP19944787.1A 2019-09-10 2019-09-10 Four à dispositif de détection de mode de cuisson et son procédé de fonctionnement Pending EP4058732A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2019/050741 WO2021050011A1 (fr) 2019-09-10 2019-09-10 Four à dispositif de détection de mode de cuisson et son procédé de fonctionnement

Publications (2)

Publication Number Publication Date
EP4058732A1 true EP4058732A1 (fr) 2022-09-21
EP4058732A4 EP4058732A4 (fr) 2023-10-04

Family

ID=74866372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19944787.1A Pending EP4058732A4 (fr) 2019-09-10 2019-09-10 Four à dispositif de détection de mode de cuisson et son procédé de fonctionnement

Country Status (2)

Country Link
EP (1) EP4058732A4 (fr)
WO (1) WO2021050011A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528229A1 (de) * 1985-08-06 1987-02-12 Bosch Siemens Hausgeraete Anordnung zur ansteuerung von elektrischen verbrauchern in backoefen
DE10313596A1 (de) * 2003-03-26 2004-10-07 BSH Bosch und Siemens Hausgeräte GmbH Backofengerät
US8766144B2 (en) * 2008-07-11 2014-07-01 Electrolux Home Products, Inc. Cooking appliance and method of cooking a food item
FR2966911B1 (fr) * 2010-10-28 2012-11-16 Thirode Grandes Cuisines Poligny Procede de cuisson de produits alimentaires dans un four
DE102016209163A1 (de) * 2016-05-25 2017-11-30 BSH Hausgeräte GmbH Haushalts-Gargerät
KR20180083167A (ko) * 2017-01-12 2018-07-20 엘지전자 주식회사 조리 기기 및 그를 포함하는 조리 시스템

Also Published As

Publication number Publication date
WO2021050011A1 (fr) 2021-03-18
EP4058732A4 (fr) 2023-10-04

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